FleetPro 16.5 x 7 Brake Drum – 10-Hole Outboard Mount – Replaces Gunite 3758XUpgrade your fleets stopping power and thermal stability with the 16. 5 x 7 Brake Drum by FleetPro. Engineered for high performance commercial applications, this heavy duty drum is manufactured to provide superior structural integrity and perfect rotational balance. Whether you are installing it on the driver side or the passenger side of your tractor or trailer, you can expect a smoother ride and consistent, reliable braking response under heavy